Android studio编写简单的手电筒APP
很不错的手电筒APP，分享给大家，希望大家喜欢。
1.Java代码
packagecom.example.goo.gfire;
importandroid.app.Activity;
importandroid.hardware.Camera;
importandroid.hardware.Camera.Parameters;
importandroid.os.Bundle;
importandroid.view.View;
importandroid.widget.Button;
publicclassFireActivityextendsActivity{
privateButtonbutton;
privateCameracamera=Camera.open();
privateParametersparameters;
privatebooleanislight=true;
publicvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fire);
button=(Button)this.findViewById(R.id.bn);
button.setOnClickListener(newView.OnClickListener(){
@Override
publicvoidonClick(Viewv){
if(islight){
camera.startPreview();
parameters=camera.getParameters();
parameters.setFlashMode(Parameters.FLASH_MODE_TORCH);
camera.setParameters(parameters);
islight=false
;
button.setText("关");
}else{
parameters=camera.getParameters();
parameters.setFlashMode(Parameters.FLASH_MODE_OFF);
camera.setParameters(parameters);
islight=true;
button.setText("开");
}
}
});
}
}
2.FireActivity.java
packagecom.example.goo.gfire;
importandroid.app.Activity;
importandroid.hardware.Camera;
importandroid.hardware.Camera.Parameters;
importandroid.os.Bundle;
importandroid.view.View;
importandroid.widget.Button;
publicclassFireActivityextendsActivity{
privateButtonbutton;
privateCameracamera=Camera.open();
privateParametersparameters;
privatebooleanislight=true;
publicvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fire);
button=(Button)this.findViewById(R.id.bn);
button.setOnClickListener(newView.OnClickListener(){
@Override
publicvoidonClick(Viewv){
if(islight){
camera.startPreview();
parameters=camera.getParameters();
parameters.setFlashMode(Parameters.FLASH_MODE_TORCH);
camera.setParameters(parameters);
islight=false
;
button.setText("关");
}else{
parameters=camera.getParameters();
parameters.setFlashMode(Parameters.FLASH_MODE_OFF);
camera.setParameters(parameters);
islight=true;
button.setText("开");
}
}
});
}
}
3.content_fire.xml
<?xmlversion="1.0"encoding="utf-8"?> <RelativeLayoutxmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" app:layout_behavior="@string/appbar_scrolling_view_behavior" tools:context="com.example.goo.gfire.FireActivity" tools:showIn="@layout/activity_fire"> <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:text="电筒模式" android:textSize="34sp" android:textStyle="bold" android:gravity="center"/> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/bn" android:textOff="关" android:textOn="开" android:height="400dp" android:layout_alignParentBottom="true" android:layout_centerHorizontal="true" android:layout_marginBottom="59dp" android:fontFeatureSettings="@string/auth_google_play_services_client_facebook_display_name" android:textColor="@color/common_signin_btn_dark_text_focused" android:textStyle="bold" android:textSize="100sp" /> </RelativeLayout>
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持毛票票。